The correct answer is A. Bhot.
The Bhot are a tribal group found in the Lahaul and Spiti district of Himachal Pradesh. They are a Mongoloid people who speak a Tibeto-Burman language. The Bhot are traditionally a pastoral people, but many now live in villages and work in agriculture or government jobs.
The literacy rate among the Bhot is the lowest of any Scheduled Tribe in Himachal Pradesh. According to the 2011 census, the literacy rate among the Bhot was 59.3%, compared to the state average of 82.8%. This low literacy rate is due to a number of factors, including poverty, lack of access to education, and the remoteness of many Bhot villages.
The Bhot are a proud and independent people, and they have a rich culture and history. However, they are also facing a number of challenges, including poverty, lack of education, and discrimination. The government of Himachal Pradesh is working to address these challenges, but there is still much work to be done.
The other options are incorrect because they are not Scheduled Tribes in Himachal Pradesh. Pangwala, Kanaura, and Lahaula are all castes, not tribes.